Document Type and Number:
Japanese Patent JPH03128741
Kind Code:
U
Application Number:
JP3780690U
Publication Date:
December 25, 1991
Filing Date:
April 09, 1990
Export Citation:
International Classes:
E02D29/02; (IPC1-7): E02D29/02
Domestic Patent References:
| JPS6361449B2 | 1988-11-29 | |||
| JP63086149B | ||||
| JP59116445B |